[Open for discussion] Refine dependencies

[zxzxwu]

(I haven't updated documentation because I think there will be some discussions)

Our dependency groups is a bit complicated right now. There have been some small problems like:

1. The number of optional dependency group is increasing
2. Divergent cryptography version requirement
3. Highly specialized dependencies for Emscripten
4. Apps dependencies are marked mandatory
5. Not everyone needs all transports

So here we apply some changes:

• Move dev-only deps to [dependency-groups]
• Add a all option including all other options
• Add app and transport options
  • This might be debatable?
• Replace appdirs with platformdirs

Also some questions:

• On https://pyodide.org/en/stable/usage/packages-in-pyodide.html it shows that platformdirs is supported, so maybe we can remove platform_system!='Emscripten' condition? I am not pretty sure how does dependency for pyodide work.

[zxzxwu]

Maybe avatar and pandora should be removed from all option since most users don't need them. I am planning to remove them from Bumble (including bumble.pandora) later this year since we have almost stopped maintaining them publicly.

[barbibulle]

I think it's a great idea to make the dependencies more modular. It seems that dependency groups are usually intended for developer-focused options (doc, tests, ...) not end users. So, for instance, transports would not really be a dependency group. Those would be optional dependencies.
I'll play around with different variants and see if I can recommend some alternatives.

[barbibulle]

I think this PR goes in the right direction. It is unfortunate that there isn't a way to specify a "default" for when no optional dependencies are specified, so this will create a breaking change for users, which we'll have to deal with by documenting the change well, and maybe also trying to print out useful errors when we can.
I suggest that for optional transports, which users won't get by default anymore, we use a try/except when importing the optional dependencies and print out the proper message (like "please install bumble[xyz]") to be helpful.